ME3: Extract ancient technology.

ME3: Disable a group of fighter squadrons.

Establish or rekindle a romantic relationship in all three games in Mass Effect Legendary Edition

ME3: Deliver most of the Galaxy at War assets to the final conflict.

ME3: Stop an out-of-control scheme before it's too late.

ME3: Kill 10 guardians with headshots from the front while their shields are raised.

ME3: Uncover an ancient secret.

ME3: Survive the swarm.

ME3: Destroy an Atlas dropped from orbit.

ME3: Obtain two non-customizable suits of armor.

ME3: Hijack an Atlas mech.

ME3: Escape a Reaper in the galaxy map.

ME3: Kill a brute while it's charging you.